Traveling barrel pump



W. E. ELLIS TRAVELING BARREL PUMP Get. 28, 1924.

Filed Jan. 8, 1924 Patentedflct. 28, 1924.

WARREN n ELLIS, or GRIDLEY; KANSAS, ASSIGNOR, BY manor Ann mnsnr: AS- 1SIGNMENTS, TO ELLIS MANUFACTURING COMPANY, OF KANSAS CITY, KANSAS. I

'rnavnnme BARREL rum.

Application filed January 8 1924. Serial No. 685,083.

rel pump and particularly to the sliding. connection at the lower end ofthe barrel upon the tubular anchored standard, and comprises animprovement upon the construction disclosed in my pend-ing applicationfiled January 15, 1923, Serial Number 612,694. I

In constructions of this character the space between the piston upon theanchored standard and the cap nut at the lower end of the barrel forms adead chamber in which more or less oil collects in the ordinaryoperation of the pump and if this body of oil enters the chamber withany velocity it carries sand in suspension which by contact with thepiston cups cuts the same so as to require frequent renewal. In order topermit free operation of the barrel upon the standard this cap nut mustbe spaced therefrom to permit a sliding movement without binding, andsuch space allows the entrance of oil from the well tube which offers aresistance in the upward movement of the barrel when it is expelled andenters the dead chamber rapidly in the downward movement during whichthe dead chamber is created. j

To avoid these practical difliculties in operation the present inventionhasfor an object to provide a valved connection at the cap nutwhich,will permit the free expulsion of the oil'in the dead chamber inthe upward movement of the barrel and practically close the space aroundthe anchored.

standard in the downward movement of said barrel.

A further object of the invention is to provide a novel and improvedconstruction of cap nut having oil passages u on its interior adapted tobe controlled. y an annular check valve carried by the nut.

Other and further objects and advantages of the invention will behereinafter set forth and the novel features thereof defined by the apended claims.

In t e drawing:

Figure 1 is a vertical section with parts broken away showing the pumpassembled;

larged scale" of the pumping elements,

Figure.3 is a detail section on line' 3 -3 of Figure 2; v

Figure 4 is a similarv 4-4 of Figure 2;

Figure 5.is a detail nut; and

' Figure 6 is a similar view of the annular check valve.

Figure 2 is a similar view upon an enviewv on the line perspective ofthe cap.

Like numerals refer to like partsthroughout the several figures of thedrawing.

The general construction and arrangement of the pumping elements issimilar to that disclosed in my application before mentioned andcomprises essentially a well tubing 10 connected at its lower end to acasing 11 in. which atubular standard 12 is suitably anchored as shownat 13. The upper portion of this tubular standard is provided withpiston cups '14 and the arran ement thereof difi'ers from that in theapp ication mentioned in that all of the cups are deflected downwardlyand are secured in contact with the separators 15 by means of a lock nut16. Above this nut the valve casing 17 is mounted upon. the upper endofthe standard and provided with a check valve 18. Surrounding thispiston and valve is a working barrel 19 which carries at its upper. enda similar check valve 20 as usual in this type 'of pump.

At the lower. end of the working barrel 19 a cap nut 21 is threadedtherein and has a bearing upon the standard 12.' The interior surface ofthis nut is formed with a series of oil passages 22 intermediate of thebearing surfaces 23 so as to permit the free discharge of oil from thedead chamber 24 which exists between the nut and the valve at the upperend of the standard. F or the ing the ring 26 separated from the nut byspacers 27 and open at its sides so as to permit the free insertion orremoval of the annular check valve 25 which may be formed of any desiredmaterial, preferably of fiber. The spacers 27 are of suiilcient lengthto permit a reciprocatory motion of the annular check valve toward andfrom the base of the nut so that when in the lowered position as shownin Figure 3 the oil is free to be discharged from the dead chamber 24during the upward movement of the barrel, while in the opposite ordownward movement thereof this valve rises to the position shown withoil but in Figure 1 and closes the passages 22 so as to practicallyprevent the entrance of oil into this chamber. This valve does notcompletely prevent the chamber from filling permits only a limitedquantity to enter and prevents the oil entering with a velocity whichwould'carry with it sand or other material liable to injure the pistoncups at the upperend of the standard with which the body of liquid isbrought in contact during the ordinary movement of the barrel.

The operation of the invention will be apparent from the foregoingdescription from.

which it will be seen that the construction presents a simple andeificient means for controlling the entrance and discharge of oil fromthe dead chamber intermediate thev barrel and anchored standard so as tosecure the most efiicient operation ofthe parts without resistance fromany body of liquid in such chamber and to prevent injury to the cups orother piston parts of the pump. Under some conditions the valve ring maybe omitted as the passages in the cap nut permit the free flow of liquidand prevent the formation of a dead chamber containing trapped liquidwhich will resist the free operation of the urnp.-

- vided at its upper portion While the specific construction of the capnut and its cooperating check valve has been shown and described, theinvention is not limited thereto as changes and alterations may be madetherein without departing from the spirit of the invention as defined bythe following claims.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. In a pump, 'a tubular standard prowith' a piston and valve, a workingbar-rel surrounding said standard and piston, a ca nut at the lower endof said barrel, an a valve carried by said nut to restrict the passageof liquid between the barrel and standard in downward stroke of theformer.

2. In a pump, a tubular standard pro- .vided at its upper portion with apiston and annular check valve carried bv said nut and cooperating withthe under face thereof to close said passages. V

4:. In a pump, a tubular standard providedat its upper portion with apiston and valve, a working barrel surroundingsaid standard and piston,a cap nut at the lower end of said'barrel provided with interiorpassages surrounding said standard, a valve cage depending from saidnut, and an annular check valve disposed in said cage to cooperatewith'the base of said nut.

5. In a pump, a tubular standard provided at its upper portion with apiston and valve, a working barrel surrounding said standard and piston,a nut disposed at the lower end of said barrel and provided with facescontacting with said standard and intermediate liquid passages upon itsinner face, a valve cage comprising an annular ring connected to saidnut by spacing lugs, and an annular checkyalve disposed within said ringto cooperate with the base of the nut.

6. In a pump, a tubular anchored standard provided with avalveat itsupper portion, a series of cups mounted upon said standard andalldepending downwardly, a lock nut for clamping said cups in position,a casing for said valve threaded upon the standard to engage said nut, abarrel surrounding said piston and standard, and a threaded cap nutmounted atthe lower end of said barrel and provided with a valvedisposed to restrict passage of liquid into the space between said nutand standard in the downward travel of the barrel.

In testimony whereof I aflix my signature.

WARREN I 1 ELLIS.

